Sales and revenue\n\n According to preliminary sales figures from Activision, Modern Warfare 2 sold approximately 4.7 million units in the United States and the UK combined in the first 24 hours of its release.

The game earned US$800 million in revenue in its first three days of release, and US$1 billion within 10 days, surpassing the series previous record-holders, 2011's Call of Duty: Modern Warfare 3 and 2012's Black Ops II. It was the best-selling game of the US in 2024.

No, CoD: Warzone does not run through Steam. In fact, the new CoD: Modern Warfare isn't even available on Steam if you wanted it. Warzone is downloaded and launched through Blizzard's Battle. No you need a Blizzard Entertainment.